Kristen Margaret (Nicknamed Kaoru by Michelle Kazusa) was once a Soccer Player, but due to the her leg gotten injured from a tackle, she ultimately quits soccer, and starts her normal life. Until one day: She decided to became a Magical Girl and made a contact with Morianna, and she regains a strong & flexible body, and gives the Witches a kick to the can, literally.

She usually partners with her friend: Monica, before she went MIA. After this, she joined Sabrina's Team, which is also helping Kristen to search her old friend.